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PhET Sims

@PhETsims

Increasing #STEM literacy worldwide with free interactive simulations! #OER #edtech #math #science https://nitter.gq/t.co/RcgEN208GA

 Boulder, CO
phet.colorado.edu/
Joined September 2010
  • Tweets16K
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  • Followers16.4K
1.6KMedia
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Today's the DAY!!! Join the #FREE #EarlyAccess period for PhET Studio right now! Go to phet.colorado.edu/studio to get started crafting your own presets. We can't wait to see what you create! #LaunchDay #PhETStudio #InteractYourWay
Image from PhET Sims (@PhETsims)
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Overheard at #NCTM2026: “Dude, I’m gonna go play.” “These are free??” (Yes. Every single one.) “This session was so practical and applicable.” Thank you to all the math educators who stopped by or joined our session. f.mtr.cool/q3milukwzb #MathTeachers #MathEd #FreeResources
PhET team member presents at a podium beside a large screen showing a histogram in the simulation Projectile Data Lab. Workshop attendees sit at round tables with laptops interacting with the same sim.

ALT PhET team member presents at a podium beside a large screen showing a histogram in the simulation Projectile Data Lab. Workshop attendees sit at round tables with laptops interacting with the same sim.

A PhET team member and educator standing next to a conference booth smiling and reviewing a flyer. The educator wears a backpack and holds a red coffee cup.

ALT A PhET team member and educator standing next to a conference booth smiling and reviewing a flyer. The educator wears a backpack and holds a red coffee cup.

A PhET team member in a light blue sweater at conference booth demonstrating a PhET sim on a tablet to two attendees. One of the attendees is holding flyers.

ALT A PhET team member in a light blue sweater at conference booth demonstrating a PhET sim on a tablet to two attendees. One of the attendees is holding flyers.

Person interacting with the simulation Projectile Data Lab on a tablet at PhET's exhibit booth. In the background there is a sign that says "160+ free simulations," and a PhET team member standing with a backpack and a phone.

ALT Person interacting with the simulation Projectile Data Lab on a tablet at PhET's exhibit booth. In the background there is a sign that says "160+ free simulations," and a PhET team member standing with a backpack and a phone.

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Three emojis. 🐰 🐺 🧬 Name the PhET sim. 🔍 Clue: it's a biology sim #biologyteacher #biology  Guess in the comments.
Image from PhET Sims (@PhETsims)
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Three free sims to try in class this week. 🎃 Compare launcher data in Projectile Data Lab, find a fair share in Mean: Share and Balance, and build up static charge in John Travoltage. Bonus: each one has a little fall flavor built in. Free at f.mtr.cool/hkmmyc6vxd
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At NCSM in Denver? Join PhET team member Catherine Carter, Monday, Oct 26, 4–5 pm in Governors Square 14 (Session 452). We’ll share strategies for facilitating K-2 number sense with free interactive sims. #NCSM2026 #MathEd
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New sim alert! Check out our free sim Alpha Decay. Half-life isn't when most of the atoms are gone. It's when half are. Now students can measure it themselves. f.mtr.cool/sg78ivp1v7 #ScienceTeacher #ChemistryTeacher #PhysicsTeacher #HalfLife #PhET
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The vowels have left the building. 🎯 BLNCNG CHMCL QTNS — 26 letters · 3 words. Name the sim. 🔍 Clue: Adjust the coefficients until both sides match. #chemistryteacher  #chemistry  #chemistrygames
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Can your students predict where the next particle will land? Fire particles one at a time and watch the pattern build. Quantum Wave Interference is new and free on PhET.  Try it out to share your thoughts. f.mtr.cool/f7ee4agpq8
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Happy #WorldTeachersDay to the educators who bring science and math to life, one sim at a time. We made these frames for you. Visit twibbonize.com/proud-phet-te… Swipe to pick a frame, add photo, download and share it on your story, feed or WhatsApp Tag @phetsims #ProudPhETTeacher
Image from PhET Sims (@PhETsims)
Image from PhET Sims (@PhETsims)
Image from PhET Sims (@PhETsims)
Image from PhET Sims (@PhETsims)
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Dear Teachers, we've been meaning to tell you.... WHAT YOU MEAN TO US! Happy #WorldTeachersDay #PhETsims #ProudPhETTeacher
Image from PhET Sims (@PhETsims)
Image from PhET Sims (@PhETsims)
Image from PhET Sims (@PhETsims)
Image from PhET Sims (@PhETsims)
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Image from PhET Sims (@PhETsims)
Image from PhET Sims (@PhETsims)
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If atoms decay at random, how can half-life be so predictable? PhET developer John Blanco shows what happens when you watch a thousand atoms at once and why that randomness becomes something scientists can count on.
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Happy International Translation Day! 🌍 Hundreds of volunteer translators have brought PhET sims to students in 132 languages. Thank you to every translator for every hour and word you've contributed. Find sims in many languages: f.mtr.cool/sukg7lb4of
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Three emojis. 🧀 🍞 🥪 Name the PhET sim. 🔍 Clue: it's a chemistry sim, and it really does start in the kitchen. #chemistryteacher #chemistry #stoichiometry Guess in the comments.
Image from PhET Sims (@PhETsims)
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Which one doesn't belong? 🤔 01 Build an Atom, 02 Build a Fraction, 03 Build a Molecule, 04 Build a Nucleus. Three share something; the fourth doesn't. Which is the odd one out?  What's the rule?
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Correct answer: Build a Fraction 🍕 But we did come across another answer that we’d give full credit to.
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PhET Sims retweeted
Mrs Harvie (@HarvieMrs) profile picture
Mrs Harvie@HarvieMrsSep 24
Who needs real perfume when you have virtual particles? Loved using @PhETsims for modelling diffusion today—zero lab clean up and maximum engagement! 💻 #DigitalPedagogy #Science @St_Rochs @StRochsScience
Image from Mrs Harvie (@HarvieMrs)
Image from Mrs Harvie (@HarvieMrs)
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Get a sneak peak at the Photoelectric Effect simulation being released soon, and learn more about what makes it so effective. Explore our free quantum sims on the PhET Website 🔗f.mtr.cool/yjlzporth9
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One sim. Four concepts. 🎯 #Balance. Proportional reasoning. #Torque. #Lever arm. Which PhET sim covers all four? 🔍 Clue: Your students have all played on one at the park. Guess in the comments. #physicsteacher #iTeachPhysics  #phet
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Ready for the answer? Check out the free sim “Balancing Act” phet.colorado.edu/en/simulat…
Balancing Act

Balancing Act

Play with objects on a teeter totter to learn about balance. Test what you've learned by trying the Balance Challenge game.

phet.colorado.edu
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PhET Sims retweeted
Kyle Niemis (@KyleNiemis) profile picture
Kyle Niemis
@KyleNiemisSep 16
Hey @PhETsims look at this new question type on @waygroundai and how well it works with your sims 😎
Image from Kyle Niemis (@KyleNiemis)
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Fire one particle at a time through a double slit and an interference pattern still shows up. You could never watch that in a real lab. Our new quantum sim lets students watch it.  f.mtr.cool/1gv94lalcx #QuantumPhysics #ScienceTeachers #TeacherResources
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